Filter.



No. 650,943. Patented lune 5, i900. L. C. MAILTBY. A

FILTER. (Application med se'pt. 22. 1899-.)

(No Model.)

/ATTE5T IPA/EATOR- Z g i y 9 aww,

' NITED STATES PATENT OFFICE;

LEWIS MALTBY, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR OFEIGHT-NINTIIS TO S. S. YODER, J. J. KLEINER, WILLIS BOLLS, A. I-IOMRIG-HAUS, MARY R." MASON, SARAH S. SAMPSON, MARY SMITH, AND OAR- RIE M,JORDAN,

OE SAME PLACE.

FILTER.

SPECIFICATION forming part of Letters Patent No. 650,943,01ated June 5,1900. Application filed September 22, 1899. Serial No. 731,304. (Nomodel.)

T @ZZ 7,071,071?, it may concern:

Be it known that I, LEWIS C. MALTBY, a citizen of the United States,residing at Vashington, in the'District of Columbia, have inventedcertain'new and useful Improvements in Filters; and I do hereby declarethe following to be a full, clear, and exact description of theinvention, such vas will enable others skilled in the art to which itappertains to Io make and use the same.

, This invention relates to certain new and useful improvements infilters of that class in which a porous filtering blockorstone isemployed through which the liquid is forced to percolate before it canpass to the receptacle from which it is drawn for use.

The present invention has for its object, among others, to provide asimple and cheap construction of filter, especially adapted for zodomestic use, which can be readily cleansed or taken apart Whennecessary. vI form the filtering-body of substantially-heinisphericalshape and secure it detachably in position by a rod that serves to holdthe part-s together,

z 5 the bottom edge of the filtering-body resting upon a packing-ringthat serves also to form a tight-joint with the cover which reststhereupon. This cover is substantially semispherical in form and ishinged so that it may be 3o turned up When desired, and novel lockingmeans are providedfor securing the cover or cap in its closed positionto constitute a water-tight compartment or chamber between the cap andthe vporous body, into which the water is introduced. The reservoir isairtight, and extending thereinto is an air-pipe which is so connectedwith the spigot that when the spigot is open the pipe is open to theatmosphere and when the spigot is closed 4o communication between thispipe and the air is shut oft. Thus the turning of the spigot to draw theWater from the reservoir admits the air and' allows the water to flow.Other objects and'advantages of the invention will hereinafter appearand the novel .features thereof will be specifically defined bytheappended claims.

The invention is clearly illustrated in the accompanying drawings,which, with theletters of reference marked thereon, form a part of thisspecication, and in which- Figure lis an elevation of a filterconstructed in accordance with my invention. Fig. 2 is asubstantiallycentral vertical section through the same. Like letters ofreference indicate like parts in the different views. v

Referring now lto the details of the drawings which show What I atpresent consider the preferable YWay of carrying out my invention, Adesignates the reservoir or receptacle, which may be of any suitablematerial, shape, and capacity. It is herein illustrated as provided atthe center of its bottom,upon the inner face, With a lug or thickenedportion a, which is interiorly threaded, as seen in Fig. 2, for apurpose which will soon appear.

Mounted upon the upper end of this reservoir orcylinder is a ring B,which projects beyond the periphery of the reservoir, as shown, and isprovided with a plurality of ylugs or horizontal projections b, whichmay assume any desired shape in cross-section This ring is rabbeted, asseen at b', to receive the upper end of the cylinder,and around theinner annular Wall of this ring is an up- Wardly-extending flange b2,asv seen best in Fig. 2, forming a shoulder, against which v abuts thepacki-ng-ring soon to be described. The ring B is formed at the rear ofthe lter with a horizontal extension orlug B', in which is supported thepivot or pin c, on which is pivotally mounted the cap or cover O, whichis provided with a nipple C', which may be screw-threaded, as seen inthe drawings, to receive a supply-pipe. (Not shown.) vAdjacent the hingeor pivot the cover is formed with a shoulder c', as seen in Fig.-2, andat a diametrically-opposite point it is formed with a lug or projectionc2 and upon the inner Wall with a shoulder c3, all as clearlyillustrated i-n Fig. 2. There should be as manyof these projections orlugs c2 as there are projections b, as they cooperate therewith to lockthe cover in place, as will be understood from the description of thelock hereinafter dcscribed;

D is a packing-ring of rubber or othersuitable material resting upon theupper face of the ring B, and upon this packing-ring bears the shoulderc' at the rear and the shoulder c3 at the front portion of the cover.

E is a hemispherical filtering-block of any suitable material, astripoli or any of the well known substances suited to the purpose. Itrests with its lower edge upon the packing-ring D and against theannular flange or shoulder b2, as seen clearly in Fig. 2. Then thus inposition and the cover locked in place, a water-tight chamber orreceptacleF.' is provided between this block and the cover, as will beunderstood from Fig. 2. This porous block E is shown in this instance asheld in position in the following manner: F is a rod having its lowerend screw-threaded, as seen at f, to engage the interiorly-tlneaded luga on the bottom of the reservoir, and its upper end after passingtightly through a hole in the center of the top of the block receives anut f', a suitable washer or washers f2 being provided, as seen in Fig.2. By this means the flteringblock is securelyheld in position and yeteasliy removed when it is desired to clean the under side thereof. Thisrod serves also to secure the ring Bin position upon the upper end ofthe reservoir, as will be readily understood from Fig. 2.

G is an air-pipe extending up into the reservoir nearly to the top, andthis is mounted at its lower end in the plug II of the faucet or spigot,which plug has alongitudinal passage h, which is designed to communicatewith the horizontal passage t' in the cock I, rotatably mounted in theusual manner and provided with the vertical passage t", communicatingwith the outer atmosphere, as seen in Fig. 2, where the spigot is shownas open to illustrate the manner of admitting air to the reservoir.

J is the lock. It consists of the plate, as seen in Fig. l, with aprojecting portion J serving as a handle, by which it maybe turned, andhaving the open center portion provided with the cam-surfacesj. One ofthese plates is engaged over each set of projections b c2, asillustrated in Fig. 2, and a single turn in either direction will lockor unlock the cover to the ring B. Then locked, the shoulders of thecover engaging as they do the edges of the packing-ring constitute aperfectly Water-tight joint. Vhen the cover is unlocked and it isdesired to raise the same on its hinge, the locking plate or platesshould be removed from the projections, and then the cover can be turnedup on its hinge, yand the porous block will thus be exposed and can beeasily cleaned with a brush, a knife, or in any other desired manner. Byremoving the nut f on the upper end of the rod F the block can beremoved entirely and after being cleansed readilyput back and secured bythe replacement of the nut.

The operation will be apparent. Tater is admitted through the nipp'leC', and as the compartment E is water-tight the water must percolatethrough the pores of the filteringblock E and into the reservoir. It iswithdrawn through the faucet or spigot, which' when turned to open thesame puts the passages i', t', and hin communication with each other andwith the air-pipe G and air is admitted into the reservoir and the waterfiows through the spigot. When the latter is turned to shut off theWater, the ingress of air is at thesame time shut 0E.

Modifications in detail may be resorted to without departing from thespirit of the iuvention or sacrificing any of its advantages. One set ofprojections and one locking-plate may be found sufficient. Thefiltering-bloek may assume different shapes.

Vhen permanentlyconnected with the service-pipe, the reservoir will ofcourse have to be turned down upon the pivot, so that thefiltering-block may be exposed for cleaning.

V'Vhatis claimed as new is'- l. A filter comprising a reservoir, aremovable cover therefor, and a porous block beneath the cover with awater-tight chamber between said cover and block, and means passedthrough said block and securing it in position, as set forth.

2. A filter comprising a reservoir, a removable cover therefor, afiltering-block independent of the cover, and means passed through theblock for securing the block and reservoir detachably together andproviding a Water-tight chamber between the block and cover, as setforth.

3. A filter comprising a reservoir, a porous block, a movable cover,means for insuring a water-tight joint between the cover and block andreservoir to provide a water-tight chamber between the cover and block,means passed through the block for securing it in position, and meanscontrolled by the spigot for admitting air to the reservoir, as setforth.

4. A filter comprising a reservoir, a hemispherical filtering-block, asimilarly-shaped cover with a water-tight chamber between them, meansengaging the said block for securing it in position independent of thecover, an air-pipe extending up into the reservoir, andspigot-controlled means for admitting air through said pipe to thereservoir,as set forth.

5. A filter comprising a reservoir, a hemispherical filtering-block, aring upon Whichit is supported, a movable cover and means passed throughsaid block for securing said rin g,bloek and reservoir together, as setforth.

6. A filter comprising a reservoir, a filtering-block, a ring on whichsaid block rests, and means passed through the said block for detaehablysecuring the ring, block and reservoir together, as set forth.

7. In a filter, a reservoir, a ring resting IIO upon the upper endthereof, a packing-ring ing-plate having cam-surfaces to engage said*`Io upon said ring, a filtering-block resting upon projections, as andfor the purpose specified. the packing-ring, ahinged cover resting uponIn testimony whereof I affix my signature the packing-ring, a rodsecuring the block to in presence of two Witnesses.

5 the .reservoir and thus holding the said rings M I Y. in positiom andremovable means for sour- L WIS C' A 1TB ing said rod, as set forth.Witnessesi 8. The combination With'the filter and a'. W. F. HELLEN,movable cover having projections Yof a look# S. A. TERRY.

